IT &computer MCQ section 4 MCQ Questions & Answers Detailed Explanation

Answer: (c)

A flip-flop is a circuit that has two stable states and can be used to store state information. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs.

It is the basic storage element in sequential logic. Flip-flops and latches are a fundamental building block of digital electronics systems used in computers, communications, and many other types of systems.

Answer: (a)

An arithmetic-logic unit (ALU) is the part of a computer processor (CPU) that carries out arithmetic and logic operations on the operands in computer instruction words. It performs all arithmetic computations, such as addition and multiplication, and all comparison operations.

Answer: (c)

A web browser is a software application for accessing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URL). The major web browsers are Firefox, Internet Explorer, Google Chrome, Opera, etc.

Answer: (d)

In IBM PC compatible computers, the Basic Input/Output System (BIOS), is the de facto standard defining a firmware interface. The name originated from the Basic Input/Output System used in the CP/ M operating system in 1975.

Answer: (c)

User Datagram Protocol (UDP) uses a simple connectionless transmission model with a minimum protocol mechanism. It provides checksums for data integrity, and port numbers for addressing different functions at the source and destination of the datagram.

It is an alternative communications protocol to Transmission Control Protocol (TCP) used primarily for establishing low-latency and loss tolerating connections between applications on the Internet.

Answer: (d)

In information technology, a protocol is an agreement between the communicating parties on how communication is to proceed.

Violating the protocol makes communication more difficult, if not impossible. A protocol is the specialist set of rules that endpoints in a telecommunication connection.